Russian President Vladimir Putin

FOR USE AS DESIRED, YEAR END PHOTOS - FILE - Russian President Vladimir Putin submerges on board Sea Explorer 5 bathyscaphe off the island of Gogland 180 kilometers (110 miles) west of St. Petersburg, Russia, Monday, July 15, 2013. Putin rode a small submersible craft 60 meters (200 feet) down to see the remains of the naval frigate Oleg, which sank in 1869. (AP Photo/RIA-Novosti, Alexei Nikolsky, Presidential Press Service, File)